Eddie Lacy is the consensus top running back prospect in the 2013 NFL draft, but his long-awaited workout Thursday didn't help his chances to be a first-round pick.

The Alabama product ran the 40-yard dash in 4.57 and 4.60 seconds on his two attempts, according to NFL.com.

In addition to not delivering explosive speed, Lacy's overall conditioning was disappointing to scouts, per NFL.com analyst Bucky Brooks. Lacy was back on the field after a pulled hamstring prevented him from participating in Alabama's official pro day last month and from running at the Scouting Combine.

At 5-11, 230 pounds, Lacy is seen as a power runner with good juice. Even if he’s not selected in the first round, he has a good shot at being a featured workhorse as a rookie.

Fellow Crimson Tide back Trent Richardson stepped into that rookie role with Cleveland last season, but Alabama product Mark Ingram has been more of a limited between-the-tackles option for New Orleans.

Lacy won't go as high as Richardson (No. 3 overall) and will fight to be a late-first rounder such as Ingram (28th overall). If Lacy goes in the first round, Denver (No. 28) and St. Louis (No. 22) are possible destinations in the 20s.